#575F9E
Closest named color: Dusky Blue (#475F94). oklch(50.8% 0.1 276.7), rgb(87, 95, 158).
Aa
White text reads best on this color (5.93:1).
About this color
#575F9E is a medium-dark, moderately saturated blue. In OKLCH its lightness is 51%, its chroma 0.100 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.028 away. White text reads best on it, at 5.93:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.100) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.53:1 |
| White text | 5.93:1 |
Values
| HEX | #575F9E |
| RGB | rgb(87, 95, 158) |
| HSL | hsl(233, 29%, 48%) |
| OKLCH | oklch(50.8% 0.1 276.7) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #575F9E | 5.93:1 | AA | Lc -84.8 | Fine for body text |
| Black text on #575F9E | 3.53:1 | AA large text | Lc 24.5 | Dividers and decoration only |
| #575F9E text on white | 5.93:1 | AA | Lc 79.6 | Fine for body text |
| #575F9E text on black | 3.53:1 | AA large text | Lc -22.2 | Dividers and decoration only |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 700.
-
Step 50
50
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E7E9F3
oklch(93.5% 0.014 277.1)
-
Step 200
200
#D4D8EB
oklch(88.5% 0.026 276.4)
-
Step 300
300
#B8BEE0
oklch(80.8% 0.048 277.4)
-
Step 400
400
#949DD1
oklch(70.8% 0.077 276.6)
-
Step 500
500
#7A84C5
oklch(63.2% 0.098 276.5)
-
Step 600
600
#636CB2
oklch(55.5% 0.109 276.7)
-
Step 700
700 (this color)
#575F9E
oklch(50.8% 0.1 276.7)
-
Step 800
800
#444A7C
oklch(42.8% 0.083 277.1)
-
Step 900
900
#393E64
oklch(37.7% 0.065 277.1)
-
Step 950
950
#21243A
oklch(26.8% 0.041 277.3)
#575F9E with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #4867A0 | 0.027 |
| Deuteranopia (no green cones) | #43619D | 0.026 |
| Tritanopia (no blue cones) | #3F6C77 | 0.088 |
| Achromatopsia (no color) | #646464 | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #575F9E
#575F9E
oklch(50.8% 0.1 276.7)
- #76650D
#76650D
oklch(50.8% 0.1 96.9)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #575F9E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.028
- French Blue #436BAD ΔE 0.041
- Denim Blue #3B5B92 ΔE 0.044
- Twilight #4E518B ΔE 0.049
- Denim #3B638C ΔE 0.049
- Dusk #4E5481 ΔE 0.054
- Muted Blue #3B719F ΔE 0.057
- Mid Blue #276AB3 ΔE 0.059
Use #575F9E in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.